There will probably be convergence with other shitty corrupt dictatorships, past and present. America isn't actually special.

One thing I'm watching out for is a power struggle over who succeeds Trump. And what direction they'll take things, since there will be crises that happen, and Trumpism is probably too syncretic to unify a loyal elite capable of crushing dissent. Everything from territorial expansionism to isolationaist theocracy is on the table as the new ethos, and anybody could be chosen as the main scapegoat (including Canada, unfortunately enough for me).

There was some kind of hybrid ICE-national guard riot control unit they were talking about making, which is a lot like how a new agency later known as the Gestapo started. Hyperinflationary policy is possible further down the road, as well as just pouring gas on normal inflation in the short term.

Edit: If the new regime lasts many decades, I can guess at one possible novel thing that will happen. Actual footage of Trump will end up somewhat censored, because everything about him is at odds with what you want from an ancestral state quasi-deity.

Recent figures of that kind managed at least an appearance of dignity while alive. Ancient examples didn't have to deal with being recorded at all.